Improved gas-compensator



P. W. MACKENZIE.

Gas Regulator. I

Patented March 4, 1862 [2 van 2072- 4 T m 4/ ,8 e. w n/ I 1 w e e 2 I; 0

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UNITED STATES PATENT OFFICE.

PHILIP W. MACKENZIE, OF JERSEY CITY, NEW JERSEY, ASSIGNOR TO ADDISONSMITH, OF NEW YORK, N. Y.

IMPROVED GAS-COMPENSATOR'.

Specification forming part of Letters Patent No. 34,582 dated March 4,1862.

To all whom, it may concern:

Be it known that .I, PHILIP W. MACKENZIE, of Jersey City, Hudson county,and State of New Jersey, have invented a new and useful apparatus, knownas Oompensator, for regulating the pressure of gas while being drawnfrom the retorts by the use of exhausters; and I do hereby declare thatthe following is a full and exact description thereof, reference beinghad to the accompanying drawings, and to the letters of referencethereon.

My invention consists in the use of two or more corrugated or straight,circular, or other plates of thin metal or any suitable material (whichwill allow compensation or yielding to the variations in pressure of thegas) joined together at the periphery and having a rod connecting theupper plate with a balancevalve adjustable by means of a screw-th readout on the rod. The valve shown is apparently best adapted to thepurpose; but it may be used with any ordinary balanced valve. The rod isconnected with the valve on one side of the center, so that if theexhauster by excessive speed is exhausting more gas than is generatedthe pressure on the upper plate will be withdrawn, the plate depressed,and the valve thrust open to allow a portion of the gas to pass back andprevent the formation of a vacuum. An index plate and pointer isattached to the center of valve outside, showing the movements of thevalve.

To enable others skilled in the art to make and use my invention, I willdescribe its construction and operation.

Similar letters refer to the same parts of the different figures.

Figure 1 is a central vertical section. Fig. 2 1s a perspective View ofvalve-seat, showing dial-plate and index. Fig. 3 is horizontal sectionat the line X X, Fig. 1, compensatingplates being removed. Fig. 4 is ahorizontal perspective view with compensatingplates and upper half ofvalve-seat removed at line Y Y, Fig. 1.

A A, Fig. 1, are the compensating-plates.

d d, Fig. 2, is a circular valve-seat; f, Fig. 1, valve; f, Fig. 1,valve-chamber.

E E are ports opening into valve-chamber at s s, Fig. 1.

c c are pipes connecting with the main pipes 12 b and the exhauster a a,Fig. 1. I

J 1s lower portion of connectingrod, Fig. 1;

j, upper portion of the same with swiveljoint passing through bumper Kand nut 'n, Fig. 1, and connecting with upper compensating-plate.

m, Fig. 1, is an ornamental cap making a perfectly-close joint.

0 O is space between compensatingplates communicating with the retortsby the openings through column h h, valve-chamber f, port .9: 0, pipes cand I).

Z l, Figs. 1 and 3, show ab ar through which the conneeting-rod passes.On under side of bar are a number leather or rubber washers K, termed abumper. The collar secured to the rod below acts against the leatherbumper, which, with the bar Z, receives the strain against the upperplate when there is an undue pressure. I

The following is a description of its operation: The gas is drawn fromthe retorts through the passages b and a by the exhauster, as indicatedby the arrows 1 1 1. If the exhauster is at any time driven too fast,reducing'the pressure on the retorts below the desired point, the uppercompensating-plate is depressed and thrusts the valve open, allowing thegas to pass back, as indicated by the arrows 2 2, to supply the amountdemanded by and due to, the increased speed of exhauster. By the screwonthe connecting-rod the valve is adjusted on the verge of the port, sothat the least depression of the plate above will open it. The bumper Kreceives the strain due to any undue pressure on the plates, relievingthem and preventing any vibratory motion, and also preventing the valverising too far back in its seat.

What I claim as my invention, and desire to secure by Letters Patent, is

The use of V the compensating-platesAA, the connecting and adjustingrods 9 and j, in combination with the valve f and circular valve seat 61d or its equivalent, with long narrow ports 8 s, the whole substantiallyas herein set forth.

In witness whereof I have hereunto subscribed my name the 30th day ofNovember,

P. W. MACKENZIE. [L. s.]

In presence of CHARLES W. ISBELL, J. PAYNE LOWE.

